Perhaps you should try some spelling variations:
cham duc » pham duc, cham soc, pham duy
nang van » dang van, tang van, nong van
lang van » dang van, tang van, hoang van
hai chu » hai chau, hoi chu, hai chi
hai cau » hai chau, hai hau, hoi cau
va tinh » may tinh
ve cham » va cham, ve chat, vu cham
hieu ve » hieu va, hieu van
sai ky » sac ky
tu sai » tu bai, tu san, tu cai

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sai ky ((nang van) or (lang van)) hoc. hieu ve cham duc va tinh ((hai cau) OR (hai chu)) theo~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sai ky ((nang van) OR (lang van)) hoc. hieu ve cham duc va tinh ((hai cau) OR (hai chu)) theo.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sai ky ((nang van) or (lang van)) hoc. hieu ve cham duc va tinh ((hai cau) OR (hai chu)) theo".
• Adding a wildcard symbol may retrieve word variants: tu sai ky ((nang van) or (lang van)) hoc. hieu ve cham duc va tinh ((hai cau) OR (hai chu)) theo*.