Perhaps you should try some spelling variations:
pham chuc » pham duc, kham chua, pham huy
thien van » thi van
thi nang » thi cong, thi hanh
hanh tai » thanh tai, hang tai, han tai
pham huu » pham duc, pham duy, phan huy
tai cua » thai cua, tai cuc, tri cua
va hanh » van hanh, va thanh, va danh
so sach » so sanh, bo sach, co sach
cao hoi » cau hoi, co hoi, cao hoc
ki nang » ky nang
cua te » cua tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: so sach ((thi nang) OR (ki nang)) cao hoi. thien van ((pham chuc) or (pham huu)) va hanh tai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach ((thi nang) OR (ki nang)) cao hoi. thien van ((pham chuc) OR (pham huu)) va hanh tai cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sach ((thi nang) OR (ki nang)) cao hoi. thien van ((pham chuc) or (pham huu)) va hanh tai cua te".
• Adding a wildcard symbol may retrieve word variants: so sach ((thi nang) OR (ki nang)) cao hoi. thien van ((pham chuc) or (pham huu)) va hanh tai cua te*.