Perhaps you should try some spelling variations:
thuat hanh » thuat thanh, thuat lanh, thuat hinh
hanh tai » thanh tai, hang tai, han tai
hanh dai » hanh dao, vanh dai, thanh dat
tang van » dang van, hoang van, trong van
hanh kho » hanh khu, hang khoa, hanh theo
hieu va » lieu va, hieu qua
tang ma » mang may
so viet » hoc viet
va cam » va cham, va cac, va cao
xuc va » duc va, tuc va, luc 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 hanh kho ((tang ma) OR (tang van)) hoi. hieu va cam xuc va ((hanh dai) or (hanh tai)) so viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuat hanh kho ((tang ma) OR (tang van)) hoi. hieu va cam xuc va ((hanh dai) OR (hanh tai)) so viet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuat hanh kho ((tang ma) OR (tang van)) hoi. hieu va cam xuc va ((hanh dai) or (hanh tai)) so viet".
• Adding a wildcard symbol may retrieve word variants: thuat hanh kho ((tang ma) OR (tang van)) hoi. hieu va cam xuc va ((hanh dai) or (hanh tai)) so viet*.