Perhaps you should try some spelling variations:
thien van » thi van
doi cua » dai cua, hoi cua, dong cua
va hang » van hang, va nang, va lang
cam luc » cam xuc, cau luc
te sach » toc sach
van cam » van nam, van lam, van cau
ly nang » ky nang, ly hang, ly vang
y nang » ky nang, v nang, may nang
luc va » duc va, tuc va, loc va
di cua » dai cua, de cua, do cua
x hoi » xa hoi, o hoi, x ho

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach ((y nang) or (ly nang)) x hoi. thien van cam luc va hang ((di cua) OR (doi cua)) viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ((y nang) OR (ly nang)) x hoi. thien van cam luc va hang ((di cua) OR (doi cua)) viet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ((y nang) or (ly nang)) x hoi. thien van cam luc va hang ((di cua) OR (doi cua)) viet".
• Adding a wildcard symbol may retrieve word variants: te sach ((y nang) or (ly nang)) x hoi. thien van cam luc va hang ((di cua) OR (doi cua)) viet*.