Perhaps you should try some spelling variations:
thuat san » thuat toan, thuat song, thuat lanh
cham thu » cam thu, nham thu, pham thu
ky trang » ke trang, ky trong, ky tang
trang xa » trang va, trang ha, trong xa
hieu van » hieu va, thien van, lieu va
so sach » so sanh, bo sach, co sach
hieu ve » hieu va
nang di » nang du, hang di, nang ji
va nang » van nang, da nang, cam nang
di cua » dai cua, doi cua, de cua
cua te » cua tu
thu va » thuc va, thue va, tu va

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: ((thuat san) or (so sach)) ky trang xa hoi. ((hieu ve) OR (hieu van)) cham thu va nang di cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thuat san) OR (so sach)) ky trang xa hoi. ((hieu ve) OR (hieu van)) cham thu va nang di cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((thuat san) or (so sach)) ky trang xa hoi. ((hieu ve) OR (hieu van)) cham thu va nang di cua te".
• Adding a wildcard symbol may retrieve word variants: ((thuat san) or (so sach)) ky trang xa hoi. ((hieu ve) OR (hieu van)) cham thu va nang di cua te*.